Question about ILO DVDR04 record speeds

I'm dubbing my old VHS tapes to DVD. I bought a 4head VCR so I could get the best quality picture. Now I'm a bit confused at this point. Is the 2 hour or the 3 hour record speed going to offer more quality. Honestly, on a HD TV, the 3 hour looks a bit better than the 2 hour, but it could just be me.